MongoDBCVE-2026-13055
MongoDB Server: reachable assertion
High7.1CVE-2026-13055 · Published Jul 22, 2026 · updated Aug 5, 2026
The `$_internalIndexKey` aggregation expression can be used by any authenticated user to crash a MongoDB server (mongod). The expression fails to handle compound wildcard index specifications, triggering an internal consistency check that aborts the server process. The user must be able to run an aggregation pipeline.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| MongoDB Server Product | >= 7.0, < 7.0.39 | 7.0.39 |
| >= 8.0, < 8.0.28 | 8.0.28 | |
| >= 8.2.0, < 8.2.12 | 8.2.12 | |
| >= 8.3.0, < 8.3.7 | 8.3.7 |
Details and references
- CVSS 4.0
- CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:X/RE:X/U:X
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-617
More MongoDB advisories
All MongoDB| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Jul 22 | MongoDB Server: reachable assertion | High7.1 | 7.0.39+3 more |
| Jul 22 | MongoDB Compass: command injection | High8.4 | 1.49.7 |
| Jul 22 | MongoDB Server: resource exhaustion | Medium6.9 | 7.0.39+3 more |
| Jul 22 | MongoDB Server: resource exhaustion | High7.1 | 8.2.12+1 more |
| Jul 22 | MongoDB Server: resource exhaustion | High7.1 | 8.3.7 |
| Jul 22 | MongoDB Server: out-of-bounds read | High7.1 | 7.0.39+3 more |